Magneto-electric telegraph.



No. 63l,356. Patented Aug. 22, I899. L. G. WOOLLEY.

MAGNETO ELECTRIC TELEGRAPH.

(Application filed Aug, 1, 1898.)

(N0 Modem 3 D s I my INVENTOR Lcmljiaifim WYQZ M UNITED STATES PATENT OFFICE.

LEONIDAS G. WOOLLEY, O1 KENTON, OHIO, ASSIGNOR TO THE NATIONAL MAGNETO-ELECTRIO TELEGRAPH COMPANY, OF SPRINGFIELD, OHIO.

MAGNETO-ELECTRIC TELEGRAPH.

SPECIFICATION forming part of Letters Patent NO. 631,356, dated August 22, 1899,

Application filed August 1, 1898. Serial No. 687,381. No model.)

To all] whom it lit/Jay concur/t;

Be it known that I, LEONIDAS G. WooLLEv, a citizen of the United States, residing at Kenton, in the county of Hardin and State of Ohio, 5 have invented certain new and useful Iniprovements in Magneto-Electric Telegraphs; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in IQ the art to which it appertains to make and use the same.

My invention relates to an improved magneto-electric telegraph apparatus; and its object is primarily to provide a device that will operate without a battery or other source of constant electrical energy, to economize the electrical energy by eliminating all sustained currents during the time required to produce the dash-signs and when the line is idle, and 20 to provide the device with certain new and useful features hereinafter more fully described, and particularly pointed out in the claims.

The transmitter consists, essentially, of a device having a key to be manipulated, as in sending the ordinary dot-and-dash code, and means for generating instantaneous alternate electrical impulses only at each movement of the key, said impulses being in one direction as the key is depressed and in the opposite direction when the key rises.

In the accompanying drawings is represented one form of my invention, in which- Figure l is a side elevation of the transmitter of a device embodying my invention with one hanger removed to show the construction; Fig. 2, a side elevation of the receiver of the same; Fig. 3, a plan View of the transmitter, and Fig. 4 a plan view of the receiver with the top of the magnet removed to show the construction.

Like letters refer to like parts in all the figures.

A represents a permanent magnet having attached concave pole pieces B, between which pole-pieces is a rotative armature C, mounted on a shaft G and wound with an insulated coil D, connected to the shaft 0 at one end and to an insulated sleeve 0 on said 50 shaft at the other end. The shaft 0 is 1'0- tated by a spring K, connected, at one end to a gear J and at the other end to a shaft K, provided with suitable winding mechanism The gear J meshes with and actuates a pinion M, loosely mounted 011 the shaft 0 and connected therewith by a spring N, whereby when the armature is released said spring will turn the armature more quickly than if the pinion were attached directly to the shaft.

A greater number of gears may be interposed between the spring and armature-pinion, thus forming a slower train, or any other means of rotation, such as a drum and weight, may be used.

the insulated sleeve 0, to which brush is connected a conductor R, forming a part of the circuit. The other end of the circuit is shown at S and is attached to the frame of the machine.

To control the rotation of the armain elevated position.

Said spring is provided with a nut H to adjust its tension.

The receiver consists of a field-magnet U, having concave pole-pieces U,betwcen which pole-pieces is pivoted an oscillating armature V, having a magnetizing'coil IV, connected to the conductors R S through the bindingposts T T. armature V and constitutes the striker. each side of this arm are adjustable screws A rigid arm V extends from the At X X to limit and adjust the movements of the same and against which screws it strikes to produce the sound to be read.

By turning these screws inward and reducing the stroke the sound will be made lighter, and by turning them outward the stroke will be longer and the sound be heavier.

The operation of my device is as follows: \Vhen the spring K is wound, it tends to turn the wheel J in the direction indicated by the This wheel turns the pinion M on AbrushP engages the shaft 0 and winds the spring N, the key Y E being normallyin raised position and,with the shoulder F, engaging the lug 0, thus holding the armature from turning. When the keyis depressed, the armature is released path of the lug C". turns the armature one half-revolution,when it is stopped by the shoulder F and held as long as the key remains depressed. When the key is raised, the armature makes the other half-revolution and again is stopped by the shoulder F. During the first half-revolution of the armature its poles pass the poles of the permanent magnet, thus generating an electrical impulse in the insulated wire and all parts in circuit, which circuit is from one end of the coil Dthrough theinsulated sleeve 0, brush P, line R, coil W, line S, the frame of the machine, and shaft- C to the other end of the insulated wire D. This impulse magnetizes the armature V, and it will move according to its polarization relative to the magnet U and strike one of the screws X, causing the emission of a sound like that produced in the ordinary telegraph apparatus when the key is depressed. During the second half-revolution ol the armature 0 its poles pass the poles of the permanent magnet in reverse position, thus reversingits polarity relative to the first half-revolution.

This reverses the electrical impulse sent over i the lines, and thus reverses the magnetic polarity of the armature V. It therefore quickly moves in the opposite direction to its former movement, striking the other screw X and producing a sound like that made by the ordinary telegraph-sounder on raising the key. The striker V thus moves to and fro, actuated at each stroke by the impulse generated by the half-revolution of the armature C. By adjusting the screws X X the relative sound of the strokes may be varied to indicate correctly the openingand closing sound of the ordinary telegraph-sounder, and as the intervals bet-ween these strokes are controlled by the movements of the key and correspond thereto the result is the transmission of the usual dot-and-dash code by means of a key manipulated as in the usual apparatus and by means of the same sounds as are emitted thereby and without the use of any battery or other means of producing a sustained current of electrical energy.

Having thus fullydescribed my invention, what I claim, and wish to secure by Letters Patent, is

1. In amagneto-ele'ctro generator, a revolving armature, and a mechanism for causing it to revolve, combined with a pivoted key,

and means attached to the armature-shaft for controlling the partial revolutions of the ari mature, substantially as shown. and the upper shoulder F brought within the 1 The spring N quickly 2. In a magneto-electro generator, a revolving armature, a shaft connected thereto, and means for causing the shaft to revolve, combined with a lug or stop secured to the armature-shaft, and a key provided with shoulders against which the lug or stop strikes for the purpose of controlling the revolutions of the armature, substantially as described.

In a inagneto-electro generator, a permanent magnet provided with pole-pieces, a re volving armature placed between the polepieces, a shaft to which the armature is socured, and a lug or stop for controlling the revolutions of the armature, combined with a mechanism for causing the shaft and the armature to revolve, a key provided with shoulders against which the lug or stop alternately strikes, an insulated sleeve placed upon the shaft, a brush, and suitable conducting-wires, substantially as set forth.

4. In a magneto-electro generator, a springactuated mechanism, a revolving shaft operated thereby and provided with a spring at one end, and an insulated sleeve; a revolving armature secured to the shaft, and a lug or stop, combined with a brush which oper ates in connection with the insulated collar, a fixed magnet provided with pole-pieces, and a pivoted spring-actuated key provided with shoulders against which the lug or stop alternately strikes as the shaft and the armature revolve, substantially as specified.

5. In an electromagneto-generator, a pivoted spring-actuated key having an opening made therethrough, and suitable shoulders formed upon opposite sides of the opening, combined with a revolving armature, means for causing the armature to revolve, and fixed magnets provided with pole-pieces between which the armature revolves, and a lug or stop secured to one end of the shaft upon which the armature is placed, and which lug or stop is made to revolve within the opening formed in the key, and to alternately engage with the shoulders at the opposite sides of said opening, substantially as shown.

In testimony whereof I aflix my signature in presence of two witnesses.

LEOXIDAS G. \VOOLLEY.

IVitnesses:

LUTHER V. \IoULToN, PALMER A. Jones.

IIO 

